QÜE PROCESS GENERATES A FLEXIBLE RETENTION SYSTEM
Description of the invention The invention relates to a process that generates a flexible retention system for the transport of piece goods, consisting of an outer wrapper and intermediate elements. Both the outer casing and the intermediate elements are made from a flexible weft material. The casing and the intermediate elements are joined together, so that a division of compartments is formed in which the piece goods can be loaded into the interior of the casing. In the transportation industry, the retention or storage systems are known, which makes it possible to store large numbers of piece goods in closed receptacles or transport crates without the piece goods being damaged during transportation. It is known from the state of the art that these retention systems can be made of flexible weft material. The weft material is cut, so that rough pieces differ in length. The blanks are glued, welded or boiled together to form an outer shell with a flexible hollow section and a division of compartments or compartments or lockers inside the shell. The genres of
REF. 156400 piece can be transported in compartments or lockers. In this case for example, a flexible envelope can first be made from the weft material, the open faces of which for the most part have a rectangular cross-section. The envelope extends downward so that a hollow section is formed in the manner of a tube. The additional blanks of the weft material are introduced into this tubular wrapping as intermediate elements and are joined to each other or are joined to the wrapping so that, between themselves or with the wrapping, they form the compartments. In alternate form, the intermediate elements can be joined together, first, to form a division of compartments, and subsequently the cut-out frames of size that form the outer envelope, are joined with the division of compartments. Likewise, there are cases in which the division of compartments is produced without an outer envelope. During the current production process, in each case the retention systems can only be developed one after the other. This requires the handling of smaller individual blanks, each of which must be aligned and joined individually between itself and the wrapping. The sewing machine must be readjusted for each single seam, which is time and cost intensive. The same applies when other joining techniques are used for the machines used in this process.
If compared with the state of the art, the object of the invention is to provide a process for the production, both favorable of cost, and with time saving of a flexible retention system. First, the objective is achieved because a continuous long envelope, having a hollow tubular section and intermediate elements therein, is made from a flexible weft material. The sheath and the intermediate elements are developed and used in a length that corresponds essentially to the sum of the lengths of the individual terminated systems. Subsequently, in a second stage of production, the long envelope continuous with the division of compartments is separated into at least two parts by a division transverse to the longitudinal direction, so that at least two flexible restraint systems with the desired lengths. The longitudinal direction is defined as the direction that remains perpendicular based on the opening of the hollow section. This method is advantageous, since the flexible weave material for the wrapper and the intermediate elements is made as an enclosed article and can be cut into rough pieces in almost any length. Now, the individual seams or other connections between the parts of the transport system can be processed continuously for a large number of systems, that is, without stopping to reset the machine.
In a preferred version of the invention, all retention systems are of the same size after division. Alternatively, the retention systems may be of different sizes after division. In order to use conventional equipment when retention systems are produced, it is convenient to produce precisely two retention systems in a production lot. This also makes it possible, in a particularly preferred embodiment of the invention, that two restraint systems can be produced in which the wrapper is provided on one or more sides with outgoing excess material with respect to the division of compartments, so that cover to seal in each case one of the open faces of the two systems of retention produced that originate. With this process, two flexible retention systems can be produced that can be covered on at least one side, the seams of which can be produced without stopping to re-establish the machines. It is convenient, for the separation of the retention systems, to use a cutting tool, the blade of which has a high temperature. This makes it possible for the cut edges to be sealed simultaneously with the cut, so that the edges can not fray. Alternatively or additionally, the cut edges may be interlaced after cutting. In this way, the unraveling of the material along the cut edges is effectively prevented. Particularly advantageous is a version of the invention, in which the seams in the area of the cut edges are stitched three times. The seam in question is first produced about 1 to 2 cm beyond what is subsequently the cut edge and the same place is stitched back and forth twice more. A version of the invention is preferred, in which the envelope with the intermediate elements is folded together and extended for cutting. In this way, regular cut edges are achieved, both in the envelope and in the compartment system and the cutting tool finds the necessary resistance during cutting. The additional advantages, features and possibilities of application of the present invention can be observed from the present description of a preferred version and the associated figures. These are shown in: Figure 1 is a schematic view of a face of a flexible retention system, Figure 2 is a three dimensional view of the flexible retention system before cutting, Figure 3 is a three dimensional view of two retention systems with outgoing excess material before cutting.
In Figure 1, a version of a flexible retention system is shown by way of example. The distances between the individual parts of the retention system serve for a better illustration. The envelope 1 can be clearly recognized. In the version shown, it consists of a single piece of the flexible weft material, which is folded into three places, so that three edges 9 of the wrapper 1 are formed. The fourth edge of the rectangular wrapper is formed by sewing the two ends of the plot. Alternatively, the seam 10 can be replaced by a glued or welded joint. This applies equally to all seam joints described below. Inside the envelope, additional pieces of the weft material are now sewn, which are called intermediate elements. On the sides of the envelope (on the left and on the right in Figure 1) the pieces 13 folded in an L-shape are used, each of which is stitched on the inner surfaces of the upper 15 and lower sides 16, respectively, of the envelope and on the inner surfaces 11 and 12 of the sides of the envelope. Whereby the rectangular compartments 3 which are formed by the L-shaped intermediate elements 13 and the shell 1 originate. The rest of the internal space of the shell is now divided by the wefts 14 folded in a U-shape., so that the additional compartments 3 are formed. The legs of the U-shaped frames are sewn on the inner surfaces of the upper 15 and lower sides 16, respectively, of the envelope 1. The bent edges of the wefts U-shaped are joined by means of the seams 17 with the bent edges of each of the intermediate elements adjacent to them in each case. The displayed development of the retention system consists of eight rectangular compartments 3. These may have other geometric shapes in other versions, for example, square, triangular or circular. The formed compartments 3 extend in the version shown through the total depth of the tubular envelope 1, although in other versions the envelope 1 may have excess leaving material with respect to the compartments 3. It is understood that the sequence during the production of individual seams (including welded and glued seams) can be chosen at will according to practical considerations. In general, those seams will first be produced, presumably, which when the cross section of the compartment is finished, are located beyond the interior, the envelope is joined to the interior division and is only closed at the end. In Figure 2 are shown the retaining systems terminated after the introduction and sewing of the intermediate elements 2 'in the tubular flexible sheath 1".
The rectangular compartments originating 3 'can be seen clearly inside the frame 1'. Alternatively, the 3 'compartments may also be of a square, triangular or circular shape. In the version shown, the retention system consists of ten compartments 3 '. The formed tubular retention system in the form of an enclosed article is now subsequently cut along the dotted lines 8 '. To effect the cutting, the retention system is bent into a flat shape and preferably is pressed along the cut edges. In this way, at least two retention systems 4 'and 5' are obtained with the same distribution of the compartments 3 'in their respective wrappings 1'. In the preferred version shown, the restraint systems are cut so that systems of the same size originate. By using a cutting apparatus with a blade that is raised to a high temperature, the cutting edges are sealed during the cutting process, so that they can not fray later. A further version of the invention is shown in Figure 3. Once again, a retention system has been produced, which comprises a shell 1", developed in the manner of a tube, with the intermediate elements 2", of so that the compartments 3"inside the envelope 1 are originated." In the example shown, the tubular envelope is precisely of a sufficient length that, after cutting along the dotted line 8", originate precisely two retention systems 4"and 5" of the same size. It is clearly seen that on both sides of the upper side of the frame it has excess projection material 6"and 7", respectively, with respect to the end of the envelope. The two projections 6"and 7" can be used, after the cutting process, as covers to close the two retention systems 4"and 5". Figure 4 shows an alternative version, in which the outer shell 1"'consists, not of a continuous web, but of four elements 18"' sewn together. In each case, the pieces 13"'folded into an L shape are used on the sides of the wrapper (on the left and on the right in Figure 4), each one is sewn on one of the inner surfaces of the upper sides 15. "'and bottom 16"', respectively, of the envelope and the inner surfaces 11"'and 12"' of the sides of the envelope The square compartments 3"'that originate are formed by the intermediate elements in the form of L 13"'and wrap 1"'. The rest of the internal space of the envelope is divided, in this version, by the frames 14"'folded into a labyrinth shape, so that the additional compartments 3"' are formed. The legs of the labyrinth-shaped patterns 14"'are stitched at one of their ends with the inner surfaces of the upper side 15"' and at their other ends with the lower part 16"'of the jacket 1"'. The folded edges of the labyrinth-shaped webs 14"'are joined by means of the seams 17"' with the folded edges of the adjacent intermediate elements in each case. A further development of the invention is shown in Figure 5. Here, the outer shell 1"" is formed from six elements 18"" and 19"", respectively, which are sewn together. The upper and lower elements 18"", respectively, of the casing and the base 20"" are placed between them, and subsequently formed from the continuous webs. The frames 18"", 20"" are in each case joined together by the intermediate elements 19"" forming the walls of the compartments 3"" and on the sides of the retention system, simultaneously, the lateral elements of the outer shell 1"". The folds or bends 21"" of the intermediate elements 19"" which are sewn with the frames 18"", 20"" all point in the same direction. It is noted that in relation to this date the best method known by the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.